/*
 * Copyright 1999-2021 Alibaba Group Holding Ltd.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.aliyun.odps.mma.meta.transform;

import com.aliyun.odps.mma.config.DataSourceType;

public class SchemaTransformerFactory {

  private static final SchemaTransformer HIVE_SCHEMA_TRANSFORMER = new HiveSchemaTransformer();
  private static final SchemaTransformer MC_SCHEMA_TRANSFORMER = new McSchemaTransformer();

  public static SchemaTransformer get(DataSourceType dataSource) {
    switch (dataSource) {
      case Hive:
        return HIVE_SCHEMA_TRANSFORMER;
      case MaxCompute:
        return MC_SCHEMA_TRANSFORMER;
      case OSS:
        return MC_SCHEMA_TRANSFORMER;
      default:
        throw new IllegalArgumentException("Unsupported data source: " + dataSource);
    }
  }
}
